Knob-attach went



W. H. GONNE.

' Knob Attachment.

No. 234,466. Paiented Nov. 16, I880 iJNiTno STATES PATENT @rrrce.

\VILLIAM H. GONNE, OF OHATHAM, CANADA, ASSIGNOR OF TWO-THIRDS TO GEORGEVATKINS AND OLIVER M. HIDDEN, OF BAY CITY, MICHIGAN.

KNOB-ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 234,466, dated November16, 1880.

Application filed August 12, 1880.

To all whom it may concern:

Be it known that I, WILLIAM H. GONNE, of Uhatham, Kent county, Dominionof Canada,

have invented an Improvement in Door-Knob- 5 Attachments, of which thefollowing is a specification.

The nature of this invention relates to certain new and usefulimprovements in the construction of doorknobs, whereby they can beadjusted to fitdoors of different thickness; and

the invention consists in the peculiar construction, arrangement, andcombination of the various parts, all as more fully hereinafter setforth.

I Figure 1 is a vertical central section through a set of door-knobs,when adjusted to the door. Fig. 2 is a horizontal central section. Fig.3 is an elevation of one of the knobs. Fig. 4 is a perspective of theadjustable slide.

In the accompanying drawings,which form a part of this specification, AA are two doorknobs, connected by a square spindle, B, which passesthrough the rosettes O O. D is a sec tion of the door.

The knob A is stationary, while the knob A is adjustable in thefollowing manner: The spindle B carries on its end a series of notches,(b a, one of which is made to engage with a lug, I), on the slidingplate E. Both the spindle 0 and the plate E enter the neck of the knob,A, and the plate E reaches back into the shank and knob, where itterminates in a flange or head, 0, which is provided with a screw-hole(Model) to engage with the set-screw (I, and furnishes an adjustment ofthe knob to the door. To me 3 5 vent the plate from falling out andbeing lost thehead cis slightly enlarged to form shoulders c c on eachside, while other shoulders,f f, are left on the inside of the neck. Inpractice the spindle is passed through the door, the lug 4.0 I) of theplate E is made to engage with the notch nearest the rosette, thecombined spindle and plate E then entered into the neck of the knob A,and the set-screw cl is screwed home, drawing the knob against itsrosette.

The mode of securing the spindle to the knob A is also novel, andconsists in a rivet, h, which holds the shank'ito place, while thespindle B is held by a short bolt, k, which passes through shank andspindle. The bolt it passes through a slot, Z, of the shank to allow thespindle movement enough to enable the riveth to be hammered down bystriking against the end of the spindle.

What I claim as my invention is- 1. In adjustable door-knobs, thecombination of the notched spindle B, plate E, engaging with saidnotches, and set-screw d, substantially as and for the purposesdescribed.-

2. The combination of the knob A, rivet h, spindle B, bolt 7c, and slotZ, substantially as specified.

VVILLIAIWI H. GONN E.

Witnesses:

H. S. SPRAGUE, 'lnno. S. DAY.

